About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Materials Design and Alloy Development VI – Closed-Loop Alloy Design
|
Presentation Title |
Improving DMA 304L Stainless Steel Chemical Homogeneity by L-PBF Scan Strategy Tuning |
Author(s) |
Thomas Rader |
On-Site Speaker (Planned) |
Thomas Rader |
Abstract Scope |
Direct Metal Alloying (DMA) supports the rapid development and evaluation of alloys by in situ alloying constituent metal powders, eliminating the need for a bulk alloying step. For developing the DMA process, 304L Stainless Steel's material properties are amenable to the Laser Powder Bed Fusion (L-PBF) process while the extensive body of research on conventionally additively manufactured 300-series stainless steel provides a useful benchmark. This work extends previous DMA research by applying a circular wobble technique from laser beam welding to the scan strategy to mitigate DMA-specific concerns. DMA deposits are compared with cast, wrought, and conventionally additively manufactured 304L Stainless Steel using EDAX and OES to determine chemical homogeneity. Microstructure and mechanical properties are also compared using micrographs and Vickers microhardness, respectively. |
Proceedings Inclusion? |
Planned: |
Keywords |
Process Technology, Other, Iron and Steel |